powerpc/ps3: Add CONFIG_PS3_VERBOSE_RESULT option

To aid debugging, add a new PS3 kernel config option
PS3_VERBOSE_RESULT that, when enabled, will print more
verbose messages for the result of LV1 hypercalls.
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0ce4b6969a08094a747bd382dbfd30b72ebc192d.1622746428.git.geoff@infradead.org

arch/powerpc/include/asm/ps3.h

@@ -232,7 +232,7 @@ enum lv1_result {
 
 static inline const char* ps3_result(int result)
 {
-#if defined(DEBUG) || defined(PS3_VERBOSE_RESULT)
+#if defined(DEBUG) || defined(PS3_VERBOSE_RESULT) || defined(CONFIG_PS3_VERBOSE_RESULT)
 	switch (result) {
 	case LV1_SUCCESS:
 		return "LV1_SUCCESS (0)";

arch/powerpc/platforms/ps3/Kconfig

@@ -85,6 +85,15 @@ config PS3_SYS_MANAGER
 	  This support is required for PS3 system control.  In
 	  general, all users will say Y or M.
 
+config PS3_VERBOSE_RESULT
+	bool "PS3 Verbose LV1 hypercall results" if PS3_ADVANCED
+	depends on PPC_PS3
+	help
+	  Enables more verbose log mesages for LV1 hypercall results.
+
+	  If in doubt, say N here and reduce the size of the kernel by a
+	  small amount.
+
 config PS3_REPOSITORY_WRITE
 	bool "PS3 Repository write support" if PS3_ADVANCED
 	depends on PPC_PS3